Question

Assertion [a] : with the increase of temperature, the viscosity of glycerine increases. Reason [r] : rise of temperature increases kinetic energy of molecules.

Answer 1

Answer:

Statement 1 is false. The temperature dependence of liquid viscosity is the phenomenon by which liquid viscosity tends to decrease (or, alternatively, its fluidity tends to increase) as its temperature increases. Thus, with increase of temperature viscosity of glycerine decrease. Statement 2 is correct because with the rise of temperature in case of liquid, the kinetic energy increases as kinetic energy of liquid molecules is directly proportional to absolute temperature.